cip 004

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Implementation of load balancing based on LNMP e-commerce website

One, the LVS load balanced NAT working mode (work on the network layer) 650) this.width=650; "Src=" https://s4.51cto.com/oss/201711/05/ 7233965d67479310bf3811804d0715af.png "title=" 1.png "alt=" 7233965d67479310bf3811804d0715af.png "/> Work flow (a). When a user requests to reach the director Server, the requested data message is first to the prerouting chain of the kernel space. At this time the source IP of the message is CIP, the target IP is

PHP text to HTML and get IP function

/*** Text to HTML** @param string $txt;* return string;*/function text2html ($txt) {$txt = Str_replace ("", "", $txt);$txt = Str_replace ("$txt = Str_replace (">", "gt;", $txt);$txt = Preg_replace ("/[rn]{1,}/isu", "return $txt;} /*** Get IP* return string;*/function GetIP () {if (!empty ($_server["HTTP_CLIENT_IP"])) {$cip = $_server["Http_client_ip"];}else if (!empty ($_server["http_x_forwarded_for"])) {$cip

Php obtains the code of the region based on the ip address.

First use php to obtain the ip address of the local machine, and then use the php curl function to obtain the detailed region of the user. Let's take a look at the code below; The Code is as follows: /** This function is used to obtain the client and IP address. */Function GetIP (){If (! Empty ($ _ SERVER ["HTTP_CLIENT_IP"]){$ Cip = $ _ SERVER ["HTTP_CLIENT_IP"];}Else if (! Empty ($ _ SERVER ["HTTP_X_FORWARDED_FOR"]){$

Php method for determining access IP address _ PHP Tutorial

Php method for determining the access IP address. This article mainly introduces how php judges access IP addresses. it involves php's judgment and usage skills on SERVER-side predefined variable $ _ SERVER, if you need a friend, you can use php to determine how to access the IP address. This article mainly introduces php's method of determining the IP address to be accessed. it involves php's judgment and usage skills on the SERVER's predefined variable $ _ SERVER. For more information, see

Detailed description of LVS Server Load balancer cluster service establishment

Detailed description of LVS Server Load balancer cluster service establishment I. LVS Overview 1. LVS: Linux Virtual Server Layer-4 Switching (Routing): forwards request packets to a server in the backend host Cluster Based on the target IP address and target PORT (based on Scheduling Algorithm ); Load Balancing at the application layer cannot be achieved Lvs (also known as ipvs) is implemented based on the firewall netfilter in the kernel. 2. lvs cluster terminology: Vs: Virtual Server

LVS Cluster type

First, Lvs-natDescription: Multi-Objective Dnat, the target address in the request message through Director modification and port for the selection of the LVS selected RS Rip and port implementation of the forwardingCharacteristics:(1) RIP and dip must be on the same network, and the private network address should be used, and rip gateways must point to the dip(2) Support port mapping(3) The request message and the response message are forwarded by the Director, the director becomes the system p

Get the method code for the client IP _php tutorial

// Get Client IP // function GetIP () { if (!empty ($_server["Http_client_ip")) $cip = $_server["Http_client_ip"]; else if (!empty ($_server["http_x_forwarded_for"])) $cip = $_server["Http_x_forwarded_for"]; else if (!empty ($_server["REMOTE_ADDR"])) $cip = $_server["REMOTE_ADDR"]; Else $CIP = "Cannot get!" "; return $

PHP get local IP code _php tutorial

Copy CodeThe code is as follows: function Get_client_ip () { if ($_server[' REMOTE_ADDR ']) { $cip = $_server[' remote_addr '); } elseif (getenv ("REMOTE_ADDR")) { $cip = getenv ("REMOTE_ADDR"); } elseif (getenv ("Http_client_ip")) { $cip = getenv ("Http_client_ip"); } else { $cip = "Unknown"; } return $

Using img to remotely call images to record visitors' browser information Operating systems

(); $ USER_AGENT = $ _ SERVER ['http _ USER_AGENT ']; $ Data = date ("Y-m-d H: I: s", time ()); $ Content = 'Access IP: '. $ ip .' Browser information: '. $ USER_AGENT .' COOKIE: '; Writeto ($ filePath, $ content ); Foreach ($ _ COOKIE as $ key => $ value ){ $ Content = $ key. '= '.html specialchars ($ value ).' '; Writeto ($ filePath, $ content ); } Writeto ($ filePath, 'Access Time: '. $ data .' '); $ Pics = file ($ image ); For ($ I = 0; $ I { Echo $ pics [$ I]; } } Function getip (){ If (!

Simple PHP Injection Demo

One of the school's external teachers wrote the program, book + Student management system, filename 001.php,002.php,003.php ... (b) problem out at 004.php number of lines I forgot, too. Pay attention to this sentence Let ' S go~ Http://localhost/zhd/004.php?ts_id=1 and 1=1 Normal. Http://localhost/zhd/004.php?ts_id=1 and 1=2 exceptions Idiot injected To judge a d

NAT Model Architecture of LVS

Lvs-natFirst, the Architecture platform environmentSystem platform: CentOS 6.5 64bit vmw10.0 lvs01 (RS), LVS02 (RS), LVS03 (director) related services and special terminology definition Director: The host that is responsible for dispatching the cluster, or simply the scheduler, The vip:virtual IP that the dispatcher provides to the outside service; typically this IP-bound domain name dip: IP that communicates with the internal host RIP, Rip:realserver IP on the director host, and the host that a

Assets faq:standard reports-top Issues [ID 109758.1]

are running the "the" to the were made that period. Make sure so you are on the latest version of the. There were several code changes to the logic of the The "the" to resolve this issue. To find the version of the Report:at UNIX prompt:release 10.7% cd $FA _TOP/SRW $FA _top/reports% strings -A Fasaamtd.rdf|grep ' header ' Windows nt:find/i ' header ' Fasaamtd.rdf Q. The year-to-date depreciation and depreciation Reserve columns are showing incorrect. A. The year-to-date depreciation and deprec

PHP Curl fake IP address and header information Code instance

This article mainly introduces the PHP curl fake IP address and header information code example, this article gives the server and client implementation code, to provide forgery and server-side detection code, need friends can refer to the Although Curl is powerful, but can only forge $_server["Http_x_forwarded_for"], for most IP address detection program, $_server["REMOTE_ADDR" is difficult to be forged: First, it's client.php code. The code is as follows:

ASP read Pure IP library code

Database using the pure database qqwry.dat,6 trillion or so. Database download Address: North Netcom |East China Telecom | Automatic selection of lines Always wanted to do with a watermark IP signature map. Have a busy weekend. ASP this aspect of a lot of information, do not say more. Just post the algorithm. NET on this aspect of the article is very few, I search anyway. NET now first say the algorithm, after a few days to make watermark map of the tutorial hair.ASP version, find two algorith

Simple PHP injection demo _ PHP Tutorial

Simple PHP injection demonstration. A program written by an external teacher in the school, including the library + student management system, file name 001.php, 002.php, 003. php ...... (from B) the problem lies in 004. I forgot the number of php lines. a program written by an external teacher at the tdwidth118row School is a library + student management system. the file name is 001.php, 002.php, 003. php ...... (from B) the problem lies in

Six Methods for PHP to obtain visitor IP addresses

Method 1 :? PhpfunctionGetIP () {if (! Empty ($ _ SERVER [HTTP_CLIENT_IP]) {$ cip $ _ SERVER [HTTP_CLIENT_IP];} elseif (! Empty ($ _ SERVER [HTTP_X_FORWARDED_FOR]) {$ cip $ _ SERVER [HTTP_X_FORWARDED_FOR];} elseif (! Empty ($ _ SERVER [REMOTE_ADDR]) {$ cip $ _ SERV Method 1 :? PhpfunctionGetIP () {if (! Empty ($ _ SERVER ["HTTP_CLIENT_IP"]) {$

Lvs-nat Model Demo

Project background: LVS is the abbreviation for Linux virtual server, that is, the Lvs-nat model is a model of load balancing technology, so let's take a look at this lvs-nat.650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M00/7C/E5/wKiom1bbnhGjgNUYAAAeshPqyTQ482.png "title=" capture. PNG "alt=" Wkiom1bbnhgjgnuyaaaeshpqytq482.png "/> As shown, the role of director is the Load Balancer Scheduler, located between the client and Realserver, If the external request message is a Director-defin

A detailed description of the LVS Load Balancing Cluster service (i.)

kernel netfilterinput hooks, and its cluster function relies on the cluster server rules defined by IPVSADM;Support a number of services based on TCP, UDP, SCTP, AH, EST, Ah_est and other protocols;4. Design-time essentials in a load-balanced cluster:(1) Session holdSession sticky (Iphash): IP address binding, source IP record in IP hash table for unified schedulingSession cluster (MULTICAST/BROADCAST/UNICAST): Broadcast cluster synchronization (replication) session, only for small-scale scenar

PHP judge the way to access IP, PHP judge ip_php Tutorial

PHP to determine the way to access IP, PHP judge IP The example in this paper describes how PHP judges access to IP. Share to everyone for your reference. Specific as follows: } else if (! empty ($_server ["http_x_forwarded_for"])) { $cip = $_server ["Http_x_forwarded_for"]; } else if ( ! Empty ($_server ["REMOTE_ADDR"]) { $CIP = $_server ["REMOTE_ADDR"]; } else { $

VirtualBox Install CENTOS6 Enhancement Package Error resolution and configure shared folders

* extras:mirror.sunnyvision.com * UPDATES:FTP.CUHK.EDU.HK Setting up Install Process Resolving Dependencies --Running Transaction check ---> Package kernel.x86_64 0:2.6.32-642.1.1.el6will is installed --processing Dependency:kernel-firmware >=2.6.32-642.1.1.el6 for package:kernel-2.6.32-642.1.1.el6.x86_64 --processing Dependency:dracut-kernel >=004-388.el6 for package:kernel-2.6.32-642.1.1.el6.x86_64 ---> Package kernel-devel.x86_640:2.6.32-642.1.1.e

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